package mao.utils;


/**
 * @author Totoro
 * @date 2020/8/12
 * @explain:
 */
public class LeetcodeUtils {

    public static TreeNode arrayToTree(String str ){
        return null;
    }

    public static class TreeNode {
        int val;
        TreeNode left;
        TreeNode right;
        TreeNode(int x) { val = x; }
    }
}
